Natural arsenic pollution is a global phenomenon and various technologies have been developed to remove arsenic from drinking water. The application of TiO (2) and TiO (2)-based materials in removing inorganic and organic arsenic was summarized. TiO (2)-based arsenic removal methods developed to date have been focused on the …
Thus, a comprehensive literature review on arsenic removal from past decades is required to highlight the current state of knowledge using biochar-based materials. ... Arsenic removal was also conducted using solid waste vegetable oil modified with Fenton reagent (Jaafarzadeh et al., 2012). The maximum removal efficiency up to …
This paper reviews the application of subsurface arsenic removal (SAR) technologies as well as current modeling approaches. Unlike subsurface iron removal (SIR), which has proven to be technically feasible in a variety of hydrogeochemical settings for many years, SAR is not yet an established solution since it shows vulnerability to …
Accessibility to clean drinking water often remains a crucial task at times. Among other water pollutants, arsenic is considered a more lethal contaminant and has become a serious threat to human life globally. This review discussed the sources, chemistry, distribution, and toxicity of arsenic and various conventional technologies that …
techniques. Existing major arsenic removal technologies include oxidation, adsorption, precipitation, coagulation. andmembrane separation. This paper presents the review of current status of ...
However, most of the review articles only focus on arsenic removal from wastes. In this paper, the main arsenic removal methods from enargite and arsenopyrite have been summarized and discussed, mainly including roasting, oxidative dissolution (acidic condition, alkaline condition, pressure oxidation and biooxidation) and selective …
This review is focused on the removal. ff. of arsenic from water using iron-based materials such as iron-based nanoparticles, iron-based layered double hydroxides (LDHs), zero-valent iron (ZVI), iron-doped activated carbon, iron-doped polymer/ biomass materials, iron-doped inorganic minerals, and iron-containing combined metal oxides.
A review on different arsenic removal techniques used for decontamination of drinking water. Environ. Poll. Bioavailab., 35 (1) (2023), Article 2165964. View in Scopus Google Scholar [72] T.D. de Souza, et al. Phytoremediation of arsenic-contaminated water by Lemna Valdiviana: an optimization study.
The aim of this study is to provide a review of the EC process used for removing arsenic and fluoride from groundwater and wastewater. Approximately 80 published studies were reviewed for this paper. ... The arsenic removal efficiency is influenced by pH, oxidation state, and reduction/oxidation potential (Can et al., 2016). To …
In the past few years, there have been extensive studies on arsenic removal techniques to increase arsenic uptake from the environment. These processes are being examined by the researchers in laboratory experiments and the field. The methods that are currently in used are ion exchange, phytoremediation, adsorption, phytobial remediation ...
Arsenic Removal Technologies: A Review. By Mark Reinsel, Apex Engineering. Arsenic is a common element in the earth's crust, natural groundwater, and even the human body. It is an odorless …
This review is focused on the removal of arsenic from water using iron-based materials such as iron-based nanoparticles, iron …
Moreover, this review discusses readily adsorption technologies that have been applied to remove arsenic from wastewater along with an analysis of arsenic chemistry and contamination. This review is also focused on the removal of arsenic from wastewater using different adsorbents such as iron, aluminium, natural and biological …
Arsenic removal technologies all suffer from one or more drawbacks, limitations and scope of application. 2. Arsenic remediation by adsorption ... In this review, adsorbents are broadly divided into two classes: (1) commercial and synthetic activated carbons and (2) low-cost adsorbents.
The aim of this review is to summarize low-cost, effective conventional technologies currently described in the literature for arsenic removal that can be used in the third world and developing countries, compare them with the emerging technologies and discuss their advantages and disadvantages along with a brief analysis of arsenic …
The electrocoagulation method for selective arsenic removal has been identified as one of the most simple and efficient methods in use ( Ali et al., 2013 ). In electrocoagulation, the basic mechanism for removal of As (III) from water involves two steps: The first step is the conversion of As (III) into As (V) (Eq.
Arsenic (As) is one of the crucial metalloid elements and is recognized as the 20th most profuse element [1,2,3] present in the earth's crust.Arsenic holds three different allotropic forms in the environment such as grey, yellow, and black, and exists in 4 valence states − 3, 0, + 3, and + 5 [].In the universe, arsenic occurs in inorganic and organic …
This review is focused on the arsenic removal from water using pristine and modified biochar adsorbents. Recent advances in production methods of biochar adsorbents and mechanisms of arsenic removal from water are also illustrated. Arsenic intake can cause human health disorders to the lungs, urinary tract, kidney, liver, hyper …
Arsenic being the twentieth most abundant metalloid in the earth's crust is one of the most hazardous elements both for humans and animals. Arsenic results from both man-made and natural activities pose a major health hazard for around 150 million people across the globe due to its carcinogenic properties. Thus, the review article …
On the basis of this consideration, the main objectives of this review are: 1) to discuss the novel adsorbents with the synergistic effects of heterogenous oxidation and adsorption; 2) to illustrate the dominant mechanisms involved in the removal of arsenic; and 3) to introduce the innovative technologies and the demonstration engineering works ...
A review. Arsenic (As) removal is of major significance because inorg. arsenic is highly toxic to all life forms, is a confirmed carcinogen, and is of significant environmental …
A review. Arsenic (As) removal is of major significance because inorg. arsenic is highly toxic to all life forms, is a confirmed carcinogen, and is of significant environmental concern. As contamination in drinking water alone threatens more than 150 million people all over the world. Therefore, several conventional methods such as oxidn ...
Arsenic removal experiments were performed by the batch equilibrium method at room temperature (25 ± 1 °C) with various initial arsenic concentrations and an adsorbent dose of 0.5 g/L ...
Arsenic contamination in water bodies is a serious problem and causes various health problems due to which US Environment Protection Agency (USEPA) set its maximum permissible limit of 10 ppb. The present …
Abstract. This review paper presents an overview of the available technologies used nowadays for the removal of arsenic species from water. …
This review summarizes the recent advances and progress in the design, strategy, and synthesis method of various manganese-based adsorbent materials for As removal. Occurrence, removal, oxidation mechanism of As(III), As adsorption on manganese oxide (MnO x )-based materials, and influence of co-existing solutes are also discussed.
Natural arsenic pollution is a global phenomenon and various technologies have been developed to remove arsenic from drinking water. The application of TiO 2 and TiO 2-based materials in removing inorganic and organic arsenic was summarized.TiO 2-based arsenic removal methods developed to date have been focused on the …
Arsenic removal technologies. Arsenic removal is influenced by the redox potential, oxidation state, and pH of the media. As a result, the chemistry …
Remediation from these trace elements must be considered in managing the groundwater exploited in the area. However, water treatment comes at a cost with As removal technologies (for example ...
The aim of this article is to review briefly arsenic chemistry and previous and currently available technologies that have been reported various low-cost adsorbents for arsenic removal. Read more ...
Recent studies have revealed that iron-based adsorbents, which are non-toxic, low cost, and easily accessible in large quantities, offer promising results for …
Arsenic concentrations were found from >0.5 μg/L to 3200 μg/L, with As(III) present as the dominant species. The relative ratio of dissolved As(III) to As(V) is often greater than 1 because As(III) is more mobile under reducing conditions. The groundwaters in these regions usually have high iron content, as well.
Arsenic is a toxic element in the metalloid family and is considered dangerous [1].It is a highly toxic element at low concentrations and causes many serious environmental concerns at all levels, since this toxic chemical is widely distributed in nature and throughout the world [2].Many countries suffer from arsenic pollution, such as …
Article. Open access. Published: 22 September 2022. A systematic study of arsenic adsorption and removal from aqueous environments using novel graphene …
This review presents an overview of nanoparticles and nanobased adsorbents and its efficiencies in arsenic removal from water. The paper highlights the application of nanomaterials and their ...
Nanoscale iron manganese binary oxides (NIM) were prepared by Kong et al. (2013) and have been applied in aqueous media for both As (III) and As (V) removal. A combination of theoretical and experimental studies was conducted of fixed-bed columns to remove arsenic from an aqueous solution.
A critical review on arsenic removal from water using iron-based adsorbents. Linlin Hao ab, Mengzhu Liu a, Nannan Wang c and Guiju Li * a a College of Marine and Environmental Sciences, Tianjin University of …
In the review is main focus on the simplest and most effective methods based on coprecipitation and adsorption processes employing iron compounds. Moreover, other techniques able to improve arsenic removal technologies, like advanced oxidation processes and those that make use of microorganisms, are also portrayed.
A comprehensive review is needed to clarify the application of FCMs in arsenic removal. In this review, the databases of Web of Science and Science Direct were used to find the research status by using the following search terms: "arsenic contamination", "organic arsenic", "arsenic adsorption" "arsenic removal" and "iron ...
